Adaptive entropy coding compression with multi-level context escapes
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United States of America Patent
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Apr 14, 2009
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Nov 30, 2007
filing date -
Nov 30, 2007
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Abstract
The performance (compression ratio) of an entropy coding compressor can be improved by separating its output into two streams: encoded output symbols compressed according to a probability model, and literal symbols that were not present in the probability model when the corresponding input symbol was to be encoded. The literal symbols are collected into a group and compressed separately. The compressed literals are stored at a discernable place relative to the encoded output symbols (e.g., at the beginning or end of the sequence of encoded output symbols).
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